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Lab
Part 1: Gas Tubes
Gas
Color of Gas Tube
Colors of spectral lines
Florescent Lightbulb
White
entire spectrum (red -> purple)
Air
Argon
Bromine
Carbon Dioxide
Chlorine
Helium
Hydrogen
Iodine
Krypton
Mercury Vapor
Neon
Nitrogen
Oxygen
Water Vapor
Xenon
Part 2: Flame Tests
Element
Flame Color
Sodium (Na+)
Potassium (K+)
Calcium (Ca2+)
Barium (Ba2+)
Strontium (Sr2+)
Lithium (Li+)
Copper (Cu2+)
tin (sn)
Questions: Questions
1. An unknown gases is viewed using a spectroscope. Since each pattern is unique to that element or compound, could it be identified this way?
2. Helium was first discovered on the sun (sun = helios) using the same method as in this lab. With complete sentences explain how helium could be found on the sun without anyone or anything ever traveling to the sun to collect it.
3. Use the color of the flames from the first table to match up the elements used in each of the plastic candles.
Instructions
Lab
Part 1: Gas Tubes
Part 2: Flame Tests
Questions:
Questions
1. An unknown gases is viewed using a spectroscope. Since each pattern is unique to that element or compound, could it be identified this way?
2. Helium was first discovered on the sun (sun = helios) using the same method as in this lab. With complete sentences explain how helium could be found on the sun without anyone or anything ever traveling to the sun to collect it.
3. Use the color of the flames from the first table to match up the elements used in each of the plastic candles.
Element in Red Plastic Candle:
Element in Orange Plastic Candle: _
Element in Green Plastic Candle:
Element in Blue Plastic Candle: _
Element in Purple Plastic Candle:
.